Synthesis of Poly(3-vinylpyridine)-Block-Polystyrene Diblock Copolymers via Surfactant-Free RAFT Emulsion Polymerization

被引：22

作者：

Nieswandt, Katharina ^{[1
]}

Georgopanos, Prokopios ^{[1
]}

Abetz, Clarissa ^{[1
]}

Filiz, Volkan ^{[1
]}

Abetz, Volker ^{[1
,2
]}

机构：

[1] Helmholtz Zentrum Geesthacht, Polymer Res Inst, Max Planck Str 1, D-21502 Geesthacht, Germany

[2] Univ Hamburg, Inst Phys Chem, Martin Luther King Pl 6, D-20146 Hamburg, Germany

来源：

MATERIALS | 2019年 / 12卷 / 19期

关键词：

RAFT polymerization; polymerization-induced self-assembly (PISA); surfactant-free RAFT emulsion polymerization; poly(3-vinylpyridine); amphiphilic block copolymer; MOLECULAR-WEIGHT DISTRIBUTION; BLOCK-COPOLYMERS; NANOPARTICLES; STYRENE;

D O I：

10.3390/ma12193145

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we present a novel synthetic route to diblock copolymers based on styrene and 3-vinylpyridine monomers. Surfactant-free water-based reversible addition-fragmentation chain transfer (RAFT) emulsion polymerization of styrene in the presence of the macroRAFT agent poly(3-vinylpyridine) (P3VP) is used to synthesize diblock copolymers with molecular weights of around 60 kDa. The proposed mechanism for the poly(3-vinylpyridine)-block-poly(styrene) (P3VP-b-PS) synthesis is the polymerization-induced self-assembly (PISA) which involves the in situ formation of well-defined micellar nanoscale objects consisting of a PS core and a stabilizing P3VP macroRAFT agent corona. The presented approach shows a well-controlled RAFT polymerization, allowing for the synthesis of diblock copolymers with high monomer conversion. The obtained diblock copolymers display microphase-separated structures according to their composition.

引用

页数：14

共 48 条

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